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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
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42 | * @param array $instance Settings for the current Categories widget instance. |
43 | */ |
44 | public function widget( $args, $instance ) { |
45 | static $first_dropdown = true; |
46 |
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47 | $default_title = __( 'Categories' ); |
48 | $title = ! empty( $instance['title'] ) ? $instance['title'] : $default_title; |
49 |
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50 | /** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */ |
51 | $title = apply_filters( 'widget_title', $title, $instance, $this->id_base ); |
52 |
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53 | $count = ! empty( $instance['count'] ) ? '1' : '0'; |
54 | $hierarchical = ! empty( $instance['hierarchical'] ) ? '1' : '0'; |
55 | $dropdown = ! empty( $instance['dropdown'] ) ? '1' : '0'; |
56 |
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57 | echo $args['before_widget']; |
58 |
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59 | if ( $title ) { |
60 | echo $args['before_title'] . $title . $args['after_title']; |